Guard for circular saws



Feb. 8,1927. I 1,616,478-

J. B. WATSON GUARD FOR CIRCULAR SAWS Filed Jan. 19. 1926 2 Shets-Sheet i U v v 16 MM Dwenlor: Jamaal. Wuhan,

y m d r 1,616,478 Fe 1927- -J. B. WATSON -GUARD FOR CIRCULAR SAWS Filed Jan.l9. 1926 2 Sheets-Sheet 2 Patented Feb. (3, 19217..

JAMES B. VJ'ATSON', OEIVIATTAPAN, MASS JULIUS C. REICHE, 01E ARLINGTON,

eloi'ro'snrrsj assrenon on ONE-THIRD T0 massaonnsnr'rs, AND own-Tramp "ro CLARENCE E. GATES, OF BRIGHTON, MASSACHUSETTS.

GUARD FOR CIRCULAR SAWS.

Application filed January 19,1926. Serial No. 82,288.

results, although it is to be understood that the various instrumentalities of which the in vention consists can be variously arranged and orgamzed, and the lnvention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and describedexcept as required by the scope of the appended claims.

Of the drawings:

Figure 1 represents a plan of a circular.

saw table with a saw guard'thereon embodying theprinciples of the present invention.

Figure 2 the same.

Figure 3 represents a vertical section ofv the same, and

Figure 4 represents a' front elevation of the saw guards and support therefor.

Similar characters indicate like parts throughout the several figures of the drawings.

In the drawings, 10 is asaw tableof usual construction having mounted therein in any well known manner a circular saw 11 which rotates towards the front of the table '10 in the direction of arrow at on Fig. 3.

its the means of operating the saw and the supports for the saw table form no part of the present invention it is believed that no illustration of these devices is necessary.

To one side of the table 10 is secured a bracket 12 having a slot 13 thereinparallel with the sides of the saw 11.

Extending through the slot 13 is the reduced. end 14 of a vertical post 15 extending upwardly abovesaid bracket 12..

The reduced end 14 has fiat sides 'contact ing with the walls of the slot 13 thereby preventing any rotation of said post 15. v

A clamping nut 16 threaded to the extreme lower end of the post 15 is adapted to represents a front elevation of 4 lv towards the table 10.

clamp the post 15 in its adjusted position, theslot 13 providing a means whereby the post 15 may be moved in a plane parallel to that of the sides of the saw 11. 1 v

Theupper end of the postv 15 has a rectangular slot 17 extending therethrough in Which is positioned the flat sided portion 18 of a horizontal support 19.

The portion 18 may be adjusted in the slot 17 and secured inv adjusted position by means of the set screw 20.--

This horizontal support has a rectangular. slot 21 extending therethrough in which is mounted the flat sided upper end of a depending member 22 having a lower end 23 pivoted thereto by means of a bolt 24 and clamp nut 25 thereby making it possible to move the end 23 at an. angle to the body pordepending member 22 when cer-.

tion of th tain kindsof work are being cut by the saw When the end 23 is thus adjusted. it is clamped in position by the nut25. T o the lower end of the end portion 23iis secured a block 26," the sides of which extend beyond the opposite faces of the saw 11. The depending member 22, is-held in adjusted position by set screw 22*. I

The block 26 is ad'usted so that its lower surface is closely-adjacent the upper face ofthe work being operated upon thereby preventing the sawed portion of the work springing upwardly away from the table 10. In the block 26 is disposed a wedge-- shaped finger. 27 whichjextends As the work is fed from the saw 11 the finger 27 will enter the sawcut in the work and prevent the portions on opposite sides of the cutfrom impinging upon the sides of downward-- the saw.

The tinge r27 is provided with ":1. Vertical one end. I I p p By means of'this clamping device 30, 31 the finger 27 may be adjusted vertically and secured in adjusted position.

j SlOlJ 29' through which extends a clamping bolt 30 having a clamp nut 31' threaded to This provides means whereby whenthe blocks 26'are raised to accommodate thickerwork, the finger 27 may be lowered so that its lower end will always be just above the top of the table. The slot 13 is provided so that the post.

may be adjusted therein to accommodate the position of theblock 26to saws ll of 7 different diameters.

The adjustment of the horizontal support 1 9 relativelyj to the post 15 is to center the blocks with the saw 11 for different widths of tables.

View of the Work which he is operating up on.

The saw guards now in use are positioned above the saw oi soffar to'the front of the ous shapes of work I guard blbck table that the workman'doe's not have a'olear View" of the work and as c'on'sequ'e'noeft-here is great" liability of the workman being injured:

By plating the guard behind'the saw this objectioirisobviated.

The supportsfor thegiia'rd are so adjustable that the guard be placed' in any desired positiontoaccommedate it to va'r'iit is" desired to operate upon.

It is believed that the operationandmany advantages stoddwi'thout further description.

Having thus described invention; I

1. In a saw guard; a horizontal support above the saw sawg a member dependingtherefrom; and a guard bloek-on'thelower end of said s'aw, un'- by whieh it isprevented from rising andextending latorally:

2. 111" a" saw" guard, a horizontal support above the saw table and at the rear of the saw; a member depending therefrom; a on the lower end of-said de pending member behind the" Crest of said saw, under which the work passes and by which it is prevented from rising and extending laterally; and a. downwardly eX- tending finger secured in said" guard bloek and ndrm'a'lly in the said saw.

tending laterally;

tending vedge-shaped finger secured 1n sald guard'block and normally in the same vertiof the invention will be, ide? table" and" at the rear of the said' depender'ally means same ve'rtital plane as 3; In a saw guard, a horizontalsupport above the saw table and at the rear of the saw; a member depending therefrom; a guard block on the lower end of said depending member behind the crest of said saw under which the work .passes and by which it is prevented from rising and eX- and a downwardly excal plane as said saw. I

4. In a' saw guard; a horizontal support above the saw table and at the rear of the saw; a member depending therefrom; a guard block on the lower end' of said depending meniber behind the crest of said saw, under which the work passes" and which it is prevented from rising and eX- tending laterally} and means for adjusting s'aidblock vertically; to accommodate said,

block for various thicknesses'of wo'rki V In a saw guard a horizontalsuppoift above the saw' table" and at the rear of the' Saw; a member depending therefrom; a guard hloek on'the lower end of said de' pending member behind the crest of said saw under which the work passes and by whieli it is prevented from rising and eX- tending laterally; and means for adjusting said b'lo'ck horizontally towards and from the rear of said saw.

6. In a saw guard, a horizontal support above the saw table and at' the rear" of the saw; amember depending therefrom; a" uard block on the lower end of said de pending member behind the crest of said saw under W'vhieh the work passes and by which it is prevented from rising and en tending laterally"; a slotted braoke't secured to said table and parallel to a side faeof the saw; and a vertieal post adjustably secured thereto and h'aving provision for? securing tlie r'eto' said Horizontal support.

71in a saw guard, a broad faded guard block in the rear of the crest of the saw unden which newer-k passes and which it is'pr'ei ented from rising and extending latfoi adjusting said bloc-k ver tieally to aoeom'inodate it to various thicknesses of work; and othermeztns for adjust ing the position of, said block horizontally toward and from the rearedge of the saw.

Signed by me at 74:6 Old South Bldg, Boston; Mass this 8th day of J anuary, 1926.

JAMES B, WATSON 

